A planned Russian strike targeting military-industrial facilities will result in countless civilian casualties, Ukrainian President Volodymyr Zelenskyy warned in a new address.

He began his latest speech by saying that on a day recognized by Ukrainians as “Forgiveness Sunday,” there will be no forgiveness for Russia.

“We will not forgive shooting our people and destroying our infrastructure. Hundreds upon hundreds of victims, immeasurable suffering. God will not forgive this, not today, nor tomorrow, never,” Zelenskyy said.

The Russian Ministry of Defense announced on Sunday it will use high-precision weapons to destroy Ukrainian military-industrial facilities.

Zelenskyy warned those sites are in urban areas surrounded by civilian residences. “Hundreds of thousands of people live and work there,” he said. “This will be a premeditated murder, but today I haven’t heard any reaction from any world leader or any politician.”

He said Russia was openly announcing a “planned atrocity” in advance because there is no reaction from the international community.

“Well, I hope you’ll at least say something tomorrow when you’ll see it happened,” Zelenskyy said. “We know exactly how these attacks will be carried out, we know the full chain of command, we know everything, and we’ll forgive nothing.”

-ABC News’ Christine Theodorou

Approximately 600 Russian missile launches have taken place since the invasion of Ukraine began on Feb. 24, a senior defense official said.

They could not corroborate any reports of the use of cluster munitions or thermobaric weapons.

Ukrainian air and missile defenses are still effective and in use, the official said, though the airspace over Ukraine is contested.

Both sides have taken losses to aircraft and missile defense inventories, the defense official added, and while they did not reveal exact numbers, they believe both Russia and Ukraine still have a majority of their air defense systems.

The official also said Russian forces are still trying to advance across the north and east of Ukraine but are being met with strong Ukrainian resistance. The convoy is still stalled.

-ABC News’ Matthew Seyler

Netflix is the latest company to suspend service in Russia, joining a growing list of Western businesses cutting ties with Russia in protest over the invasion of Ukraine.

The popular streaming service said on Sunday that it is entirely shutting down its service in Russia.

“Given the circumstances on the ground, we have decided to suspend our service in Russia,” a Netflix spokesperson told ABC News.

Variety reported reported on Sunday that Netflix had four Russian original programs in the works, including a crime thriller series directed by Belarus-born director Darya Zhuk.

Netflix's decision follows a list of Western companies suspending operations in Russia. Movie studios Warner Brothers, Sony Pictures and Disney, the parent company of ABC News, have dropped future movie releases in Russia.

Ikea, Mastercard, Visa and American Express have also suspended services to Russia. Microsoft and Apple have ceased all sales, including game consoles and phones, in the country as well.

-ABC News' Matt Foster

More than 1 million refugees from Ukraine have fled to Poland since the Russian invasion began on Feb. 24, Poland's Border Guard said on Sunday.

"This is a million human tragedies, a million people banished from their homes by the war," the Border Guard said in a statement on Twitter, noting that its latest tally was from 8 p.m. local time.

Earlier Sunday, Filippo Grandi, the U.N. High Commissioner for Refugees, said more than 1.5 million people have fled Ukraine to multiple neighboring countries since the Russian invasion began, including Romania, Hungary, Moldova and Slovakia.

-ABC News' Christopher Donato and Christine Theodorou

U.S. Secretary of State Antony Blinken crossed the border into Ukraine Saturday after meeting with Ukrainian Foreign Minister Dmytro Kuleba at the Korczowa Border Crossing Point.

"The entire world stand with Ukraine," Blinken said, and Kuleba added that he hopes Ukrainians will see this as a "clear manifestation that we have friends who literally stand by us."

Blinken said the sanctions imposed so far against Russia are "producing very, very concrete results" and that the pressure will "grow" until this "war of choice is brought to an end."

When asked directly about helping Kuleba with more firepower, Blinken said, "the support for Ukraine not only has been unprecedented, not only is going to continue, it's going to increase."

Kuleba said Ukraine "appreciates" sanctions that have been announced in the last week, but that more economic and political pressure and "necessary weapons," would "save many lives in Ukraine... many sufferings will be avoided."

Kuleba also said that they are “satisfied" with already arranged supplies of anti-tank weapons and ammunition, but that “it’s no secret” they still want fighter jets and air defense systems.

He also thanked the U.S. for sending stingers, and said they were used on Saturday.

"Just today we shot down three Russian attack aircrafts, which were bombing our cities with the use of stingers but we need -- so to say -- big air defense systems to ensure the safety of our skies. If we lose the skies, there will be much, much more blood on the ground,"Kuleba said.

In response to questions about NATO’s refusal to impose a no-fly zone over Ukraine, Kuleba said it’s a "sign of weakness," but stayed optimistic that they will change their minds.

"The time will come," he said.

-ABC News' Conor Finnegan and Justin Gomez